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 Posted: 07-14-2020 05:15 pm
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redracer
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possible there may be a vacuum leak in the brake booster hose or the booster itself?? I've had to replace 2 boosters in the past year along with a leaky vacuum booster hose(you wouldn't know it if you were to look at it). Fortunately, I had 4 rebuilt a few years ago and powder coated as well, so there was little down time.
Our cars/parts are aging and probably a good time to replace suspect items while everything is put on hold due to the covid

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 Posted: 07-14-2020 05:54 pm
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Dakota123
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Good point, it's possible.  The check valve is fine but the pedal is harder than I was expecting/remember.  I'll block the manifold port, see what happens.

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 Posted: 07-15-2020 12:18 am
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discogodfather
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I have a major lopey idle with the 104 cams and it does sound like a Chevelle sometimes, especially with the flowmaster super 44. It's easy to get it to 1000 rpm and fairly even with the Weber adjustments. Fuel injection I don't know, do you set idle electronically? Is there an idle solenoid?

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 Posted: 07-15-2020 04:32 am
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Dakota123
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Still on the Strombergs — it turned out to be the rear carb, started running on two cylinders during a driving thunderstorm (of course). Will sort tomorrow...
edit:  turned out the carb damper hung up in the bore, so fueling was right for only a very narrow range of conditions.  Ridiculous.  Can't wait to get rid of those awful things.

Last edited on 07-15-2020 04:40 pm by Dakota123

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